I grew up in Pound Ridge, a portion of NY that sticks into Fairfield County between Ridgefield and New Canaan, only about 20 miles from Sandy Hook. You might use local on-line media to try to connect with an attorney who would work pro bono on this. They must be out there.

Death certificates are not 'police reports'. They are public record. They are trying to keep autopsies of murdered kids secret. This is also wrong.
As you get physically closer to the scene two things happen. First you sense a far greater increase in the fear. This was a GIANT cover up. But they there are those few who will stand up. They are there too.

Best of luck.